microblaze: Enable OF_CONTROL by default

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 077b2a7..a730b72 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -11,6 +11,7 @@
 config TARGET_MICROBLAZE_GENERIC
 	bool "Support microblaze-generic"
 	select SUPPORT_SPL
+	select OF_CONTROL
 
 endchoice